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Finding the Fourth Proportional to 45,413.59, 68,119.59 and 20,435.96

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Solution

The fourth proportional to 45,413.59, 68,119.59 and 20,435.96 is: 30,653.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,413.59 : 68,119.59 = 20,435.96 : x
  2. Step 2: Convert to fraction form
    45,413.59/68,119.59 = 20,435.96/x
  3. Step 3: Cross multiply
    45,413.59x = 68,119.59 × 20,435.96
  4. Step 4: Simplify right side
    45,413.59x = 1,392,089,216.46
  5. Step 5: Solve for x
    x = 1,392,089,216.46/45,413.59
  6. Step 6: Final answer
    x = 30,653.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.